Hilti Aktiengesellschaft

Hil Aktiengesellschaft

Roland Meuer

Axel Fischer

Thomas Blatz

Joachim Guenther

Ralf Greitmann

Klaus Nagelschmied

Friedemann Moeller

Ferdinand Kristen

Michael Weber

Ruediger Schulz

Georg Holzmeier

Thomas Reichenberger

A power tool having a disk-shaped tool and a guard plate in order to protect the power tool from flying sparks. The guard plate here has devices for supporting a secure standing position of the power tool, wherein the devices include an elastic material and can be preassembled on tabs of the guard plate. An assembly and a method for rapidly mounting a guard plate and devices for supporting a secure standing position of a power tool on a power tool is also provided.

Power tool having a disk-shaped tool and a guard plate for protecting against flying sparks

A power tool having an air cooling system. A special air guidance system is proposed, the components of the power tool, such as a motor, transmission or electronics of the power tool, can be supplied in a particularly efficient manner with a cooling air flow around them and in this way can be cooled. In this case, the cooling system should, in particular, be independent of any components of the housing of the power tool since the air guidance is advantageously brought about by internal guidance processes, wherein these internal guidance processes preferably take place independently of components of the housing of the power tool. In particular, the housing-independent air cooling of the components of the power tool is achieved by the provision of a fan on a rotor of the motor of the power tool, which is designed, by means of a reduced pressure, to produce a cooling air flow and guide it in a suitable manner through the power tool. In a second aspect, the invention relates to a method for cooling components of a power tool.

Power tool having an air cooling system andmethod for cooling components of a power tool

A power tool having a first rechargeable battery and a second rechargeable battery as energy sources, wherein the power tool includes a main body and a motor. In particular, the power tool is characterized in that the main body has a first receiving space for receiving the first rechargeable battery, and a second receiving space for receiving the second rechargeable battery, wherein the receiving spaces are arranged in such a way within a housing of the main body that the rechargeable batteries are accessible and replaceable from a rear side of the main body, wherein the receiving spaces for the rechargeable batteries form a lower boundary of the main body of the power tool. The receiving spaces for the rechargeable batteries or the rechargeable batteries themselves are arranged in a lower, rear region of the main body, where they are particularly well protected against falling, moisture or the like.

Power tool having a first and a second rechargeable battery

A hand-held power tool () has a base housing () in which there is provided an operational unit () movable in a reciprocating manner along a operational axis (A) defining a first spatial axis (z) and spaced from a center of gravity (SP) of the hand-held power tool () in direction of a second spatial axis (y) which is perpendicular to the first spatial axis, (z), and further has a cover housing () which is held on the base housing () by decoupling elements and is fixedly connected to a main handle () and to side-handle connection element (), with the decoupling elements having, in a projection perpendicular to a plane (Eyz) defined by the first spatial axis (z) and the second spatial axis (y), a first support device () which is located adjacent to the center of gravity and which holds the cover housing () on the base housing () so as to be displaceable along and pivotal in direction of the first spatial axis (z).

Hand-held power tool

A hand-held power tool includes a drive spindle () rotatable about a rotational axis (A) and provided at its free end with a clamping flange () and a locking thread () having at least one thread undercut (), and a locking nut () tightenable on the locking thread () for securing a disc-shaped tool () between its clamping surface () and the clamping flange () of the drive spindle (), with the thread undercut () having an axial length that corresponds to at least an axial length of an inner thread () of the locking nut ().

Hand-held power tool with locking nut

A hand-held power tool includes a drive spindle () rotatable about a rotational axis (A), a clamping flange () provided at a free end of the drive spindle () and having at least one inner thread () that in a mounted condition of the clamping flange () on the drive spindle (), engages in a thread undercut () of the clamping flange (), a locking pin likewise provided at the free end of the drive spindle () and having a locking thread (), and a locking nut () tightenable on the locking thread () for securing a disc-shaped tool () between the clamping flange () and the clamping surface () of the locking nut (), with the clamping flange () having in its axial region between the disc-shaped tool () and an inner recess () of the locking nut () in which the centering collar () of the clamping flange () can be partially received at least one radial, outwardly projecting nose (), and with the disc-shaped tool () having at least one, opening radially inwardly and axially extending groove () associated with the at least one nose () of the clamping flange.

A hand-held power tool includes a spring-mounted decoupling device () for supporting a tool handle () on the tool housing () and having a first spring-mounted support () and a second spring-mounted support () that is spaced from the operational axis (A) in a second direction (y) perpendicular to the first direction (z) further away than the first spring-mounted support () that has a smaller spring stiffness along the second direction (y) than along the first direction (z).

Hand-held power tool with a decoupling device

A hand-held power tool includes a spring-mounted decoupling device () for supporting a tool handle () on a tool housing () and having a first support arrangement () including a connecting device () pivotally supported relative to the housing by a housing-side pivotal support () and relative to the handle () by a handle-side pivotal support (), and a second support arrangement () that is spaced from the operational axis (A) in a second direction (y) perpendicular to the first direction (z) further away than the first support arrangement ().

Growing community of inventors

Ettringen, Germany

Roland Meuer